A giant octopus, whose feeding habits have been affected by radiation from H-Bomb tests, rises from the Mindanao Deep to terrorize the California Coast.
| Writing | George Worthing Yates | Screenplay |
| Production | Sam Katzman | Executive Producer |
| Production | Charles H. Schneer | Producer |
| Crew | Jack Erickson | Special Effects |
| Visual Effects | Ray Harryhausen | Visual Effects |
| Editing | Jerome Thoms | Editor |
| Camera | Henry Freulich | Director of Photography |
| Art | Sidney Clifford | Set Decoration |
| Writing | Harold Jacob Smith | Screenplay |
| Art | Paul Palmentola | Art Direction |
| Sound | J.S. Westmoreland | Sound |
| Sound | Mischa Bakaleinikoff | Conductor |
| Writing | George Worthing Yates | Story |
| Directing | Leonard Katzman | Assistant Director |
| Production | Leon Chooluck | Unit Manager |
| Directing | Robert Gordon | Director |
